php 【PHP】二次元配列から共通要素を取得するref：https：//qiita.com/_bns/items/0febbb3b7426cabbd63a

Posted 2021-05-04

print_r($common);
Array ( [0] => Array ( [0] => 1 [1] => 2 ) )

$common = [];

foreach ($c as $v1) {

    foreach ($d as $v2) {

        if ($v1 == $v2) {

            array_push($common, $v1);

        }

    }

}

Notice: Array to string conversion in　XXX

$e = array_intersect($c, $d);

$c = [[1,2],[2,3],[3,4]];
$d = [[1,2],[3,5],[6,7]];